JP2012113392A - Processing method for printing-data, printing-data processing device and printing-data processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processing method for printing data enabling generation of printing-data for performing duplex printing so as to prevent the reading accuracy of a barcode printed on one face of a receipt from being reduced by a logo mark and the like printed on the other face.SOLUTION: In order to generate printing-data for printing on both surface of the receipt, a method includes: analyzing whether code data B such as one-dimension barcode is included in front-surface printing-data D1 to be printed on a front surface of a receipt (step ST3); analyzing whether graphics data G is included in back-surface printing-data D2 to be printed on the other surface of the receipt (step ST5); and adjusting the back-surface printing-data D2 so as to not allow printing at a position overlapping the graphics data G on the code data B on the front surface (step ST8) when the graphics data G is included.

Description

  The present invention relates to a print data processing method, a print data processing apparatus, and a print data processing system for performing double-sided printing in an appropriate state on a recording medium such as a receipt in a POS system or the like.

  In a POS system installed in a store or the like, a system that issues a receipt printed on both sides by a receipt issuing printer connected to the POS terminal is known. For example, a store name, transaction details, a bar code representing an ID for identifying the transaction, etc. are printed on the front surface of the receipt, and coupons, advertisements, etc. are printed on the back surface.

  Patent Document 1 proposes a POS system including a receipt printer for double-sided printing. The receipt printer of this POS system includes a first head that prints on one side of a receipt paper and a second head that prints on the other side, and an advertisement whose printing position is predetermined on the receipt paper, Transaction information is distributed and printed on both sides so that the length of the receipt is the shortest in the area excluding the fixed information printing area such as the store logo, etc., so as to eliminate the waste of the receipt.

JP 2009-123028 A

  Here, when a receipt printed on both sides is issued, for example, back side information printed on the back side may be seen through from the front side, or printing on the back side may ooze out to the front side. Thus, if the printing on the other surface appears to be overlapped, the visibility of the surface printing information is deteriorated, which is not preferable.

  For example, in printing using an inkjet head, ink printed on one side may ooze out to the other side, and when printing on both sides using a thermal head, The heat-sensitive surface on the side of the surface may develop color and cause blurring called “show-through”. In addition, when graphics having a high print density or high density are printed on the back side, the print on the back side may be seen through when the print on the front side is viewed. Such bleeding and see-through are likely to occur when the paper is thin.

  In particular, data to be read that is printed on the premise of optical reading, for example, a portion where code data such as a one-dimensional barcode or a two-dimensional code is printed, bleeding on the opposite surface, When the see-through occurs, such a problem that the reading accuracy of the data is lowered tends to occur.

  In view of the above, the problem of the present invention is that printing of data to be read such as a barcode printed on one surface of a recording medium is performed by printing a logo mark or the like printed on the other surface. To propose a print data processing method, print data processing apparatus, and print data processing system capable of generating print data for performing double-sided printing so as not to adversely affect accuracy, visibility, etc. It is in.

In order to solve the above problems, the present invention is a print data processing method for performing printing on both sides of a recording medium,
A first analysis step of analyzing whether or not the first print data is included in the first surface print data printed on the first surface on one side of the recording medium;
A second analysis step of analyzing whether the second print data is included in the second surface print data printed on the second surface on the other side of the recording medium;
When the second print data is included, the first print data and the second print data are not printed at the overlapping positions on the first surface and the second surface of the recording medium. A data adjustment step of adjusting at least one of the first-side print data and the second-side print data,
Each of the first print data and the second print data is at least one of read target data to be printed on the premise of optical reading and graphics data other than the read target data. It is a feature.

  In the print data processing method of the present invention, the first print data printed on the first surface of the recording medium and the second print data printed on the second surface on the opposite side are positioned so as not to overlap each other. As described above, one or both of the first side print data and the second side print data are adjusted or processed. Therefore, if double-sided printing is performed on the recording medium using the adjusted first-side print data and second-side print data, the first print data and the second print data do not overlap with each other. There are no negative effects on each other.

  If the target data that needs to be read optically, such as graphics such as logos and barcodes that require visibility, is set in advance as the first and second print data, these visibility and reading A reduction in accuracy can be avoided. In addition, when performing double-sided printing on a recording medium where the recording medium is thin and easily bleeds and see-through, for example, it may not be printed with graphics data having a high print density superimposed on both sides of the recording medium. In addition, graphics data may be set as the first and second print data. Alternatively, if graphics data is set as the first print data and text data is set as the second print data, the text data such as the printed transaction information is blurred on the opposite side of the advertising graphics data. This prevents the harmful effect of being difficult to read due to see-through.

  In particular, when printing one-dimensional barcodes or two-dimensional codes that are data to be read, if high-density graphics are printed on the back side, the reading accuracy of the one-dimensional barcodes and two-dimensional codes is improved. It will decline. In order to prevent this problem, one-dimensional barcode data or two-dimensional code data may be set as the first print data, and graphics data may be set as the second print data. Conversely, the first print data may be set as graphics data, and the second print data may be set as one-dimensional barcode data or two-dimensional code data. In the present invention, the data to be read is data that is optically read after printing, and typical examples are a one-dimensional barcode and a two-dimensional code, but other characters, figures, symbols, patterns, etc. Even if the symbol is a print data that is optically read after printing, it is included in the read data.

  Here, in order to prevent the first print data and the second print data from being printed at overlapping positions on the front and back of the recording medium, the first print data in which the first print data is printed in the data adjustment step. The second side print data may be adjusted so that the print position of the second side corresponding to the position is the margin or the print position of the text data included in the second side print data.

  When graphics data is continuously printed on the second surface opposite to the first surface on which the first print data is printed, a space between these graphics data, or The second side print data is adjusted so that the print position of the text data included in the second side print data is adjusted, and the first print data is placed on the first side corresponding to the margin or text data. The first side print data may be adjusted so that printing is performed.

  Furthermore, the print area of the second surface print data on the second surface of the recording medium is divided into a plurality of predetermined sections, and in the data adjustment step, the first surface on which the first print data is printed. The second surface print data may be adjusted so that the second print data is not printed in the section of the second surface corresponding to the printing position.

  Instead, a part of the print area of the first surface print data on the first surface of the recording medium is set in advance as the first surface print position of the first print data, and in the data adjustment step, It is also possible to adjust the second side print data so that the second print data is not printed at the print position on the second side corresponding to the first side print position.

  Next, when the present invention is applied to a system that issues a receipt printed on both sides, such as a POS system, for example, the first side print data specifies text data representing the contents of a transaction and the transaction. Receipt-issuing print data including the one-dimensional barcode data or two-dimensional code data representing the ID to be used, or the text representing the transaction contents of the one-dimensional barcode data or two-dimensional code data representing the store data 1st print data for receipt issuance including data. The second-side print data is receipt-issued second-side print data including the graphics data for coupons or advertisements.

  Alternatively, the first side print data is receipt first side print data including the graphics data representing a store logo and text data representing transaction details. The second-side print data is receipt-issued second-side print data including the coupon or advertisement graphics data and the one-dimensional barcode data or two-dimensional code data.

Next, the present invention is a print data processing apparatus for processing print data by the above print data processing method,
A first analysis unit that analyzes whether or not the first print data is included in the first surface print data printed on the first surface on one side of the recording medium;
A second analysis unit for analyzing whether or not the second print data is included in the second surface print data printed on the second surface on the other side of the recording medium;
When the second print data is included, the first print data and the second print data are not printed at the overlapping positions on the first surface and the second surface of the recording medium. And a data adjustment unit that adjusts at least one of the first-side print data and the second-side print data.

  In addition, the present invention is a print data processing system that can be used as a POS system or the like, the print data processing apparatus having the above-described configuration, the first-side print data after being adjusted by the data adjustment unit, and the first data And a printing apparatus that prints the two-sided print data on the recording medium.

  In the present invention, the first print data and the second print data for double-sided printing on the recording medium are adjusted so that the first print data such as barcode data printed on the first print is the second print data on the opposite side. The print data is prevented from being printed at a position overlapping the second print data such as graphics data printed on the surface. Therefore, it is possible to surely prevent a reduction in the visibility of printing such as a barcode printed on the opposite surface caused by bleeding or see-through due to high-density graphics printing, and a reduction in reading accuracy.

1 is a system configuration diagram of a POS system to which the present invention is applied. FIG. 2 is a control block diagram of the printing apparatus in FIG. 1. 3 is a schematic flowchart showing print data processing operation of the POS terminal of FIG. 1. It is explanatory drawing which shows an example of the adjustment method of a printing position. It is explanatory drawing which shows an example of the adjustment method of a printing position. It is explanatory drawing which shows an example of the adjustment method of a printing position. It is explanatory drawing which shows an example of the adjustment method of a printing position. It is explanatory drawing which shows the example of printing of a receipt.

  Hereinafter, an embodiment in which the present invention is applied to a POS terminal of a POS system used in a store such as a supermarket or a convenience store will be described with reference to the drawings.

  As shown in FIG. 1, a POS system 1 according to the present embodiment includes a POS terminal 4 having a host device (POS terminal computer) 2 and a printing device (receipt printer) 3, and a wired or wireless network 5. And a POS server 6 that performs overall management of the POS terminal 4.

  The POS server 6 includes a CPU 11 and memories such as a ROM 12 and a RAM 13, and processes information stored in a buffer or the like in the RAM 13 in accordance with a control program stored in the ROM 12. The RAM 13 includes storage areas such as a product code block 15, a product name block 16, a price block 17, an inventory block 18, an advertisement data block 19, a coupon data block 20, and a point data block 21, and the CPU 11 Based on the input information transmitted from the POS terminal 4 side, information relating to the product code, product name, and amount is extracted, and product data used for printing payment information on the receipt R and displaying on the display of the POS terminal 4 is obtained. Generate.

  The “product data” refers to data that is the basis of payment information print data for printing the contents of the payment process on the receipt R. The product code block 15, the product name block 16, and the money amount block 17 are configured by a look-up table generally called a product master.

  On the other hand, the host device 2 of the POS terminal 4 refers to the product master in the POS server 6 to acquire product data and generate payment information print data. The printing device 3 of the POS terminal 4 issues a receipt R created by printing based on the payment information print data. The host device 2 and the printing device 3 are connected via a wired or wireless communication line. When issuing the receipt R printed on both sides, the host device 2 generates the front surface print data D1 and the back surface print data D2 to be printed on the front and back surfaces of the receipt R as the print data D of the payment information, and the printing device 3 The printing apparatus 3 issues a receipt R printed on both sides based on the data D1 and D2.

  The host device 2 acquires information (product information) related to the product by input through the keyboard 31 by the operator or reading the product barcode using the barcode reader 32. Also, the customer's credit card or membership card is read by the card reader 33, information relating to credit clearing or information relating to the customer is acquired, supplied to the POS server 6 as input information, and displayed and printed from the POS server 6. Get the data. Further, the host device 2 has a display 34 for displaying product information generated based on the product data acquired from the POS server 6, so that the operator and the customer can confirm the price of the purchased product. indicate.

  The host device 2 is controlled by a printer driver OLE for Retail POS (hereinafter referred to as “OPOS”) that operates on an OS 35 such as Windows (registered trademark). OPOS provides a POS application 36 running on the OS 35 with a device-independent interface with peripheral devices such as the printing apparatus 3 and the barcode reader 32, and corresponds to each device category. A control object (CO) 37 and a service object (SO) 38 corresponding to each device model are configured.

  The POS application 36 generates payment information print data to be printed on the receipt R based on the product data and input information transmitted from the POS server 6, and this payment information print data is for the printing device via the OS 35. The CO 37 is delivered to the SO 38 corresponding to the model of the printing apparatus 3. The SO 38 processes the payment information print data, generates a print command according to the command specification of the printing apparatus 3, and transmits the print command to the printing apparatus 3. The OPOS described above is provided to the user as the printer driver 39 in a form in which CO 37 and SO 38 are combined.

  Further, the POS application 36 generates code data for a transaction ID such as a barcode or a two-dimensional code for printing on the receipt R according to the contents of the payment process. Also, graphics data such as a logo stored in advance is read out. These data are added to settlement information print data consisting of text data. Here, “print data D” is obtained by adding the code data and / or graphics data to the payment information print data.

  Here, when the POS application 36 generates the print data D for double-sided printing, the graphics data is not printed on the surface opposite to the surface of the receipt R on which the code data is printed. Then, the front surface print data D1 and the back surface print data D2 in which the print positions of the code data and the graphics data are adjusted are generated and transmitted to the printing apparatus 3 side.

  That is, the POS application 36 is a first analysis unit that analyzes whether or not code data is included in the print data printed on one side of the receipt R, and graphics data is printed on the print data printed on the other side. When the second analysis unit for analyzing whether or not the image data is included and the graphics data are included, the code data and the graphics data are not printed at the overlapping positions on both sides of the receipt R. It has a function as a data adjustment unit for adjusting print data.

  The code data for the transaction ID and the graphics data are generated in the POS server 6 (or stored in the POS server 6), and the host device 2 acquires and adds them to the payment information print data. You may make it do. Further, the graphics data may be stored in the printer driver 39, and the printer driver 39 may add this to the payment information print data.

  Next, the printing apparatus 3 is a thermal head type receipt printer, which receives various control commands and print data from the host apparatus 2, a data receiving section 41, a transport section 42, a printing section 43, a cutting section 44, and each of these sections 42. Drive unit 46 for driving .about.44, a control unit 47 for controlling the entire printing apparatus 3, and the like.

  The control configuration of the printing apparatus 3 will be described in detail with reference to FIG. The transport unit 42 of the printing apparatus 3 has a receipt feed motor 51 and transports a long receipt paper 52 (for example, roll paper) when a paper feed switch (not shown) is pressed or printed. The printing unit 43 includes a first print head (thermal head) 53 that performs printing on the front surface of the receipt paper 52 and a second print head (thermal head) 54 that performs printing on the back surface of the receipt paper 52. It is possible to issue a receipt R printed on both sides by printing on the receipt paper 52 in synchronization with the conveyance. The cutting unit 44 includes a receipt cutter 55 and a cutter motor 56 that drives the receipt cutter 55, and the rear end of the front end portion of the printed receipt paper 52 is cut to obtain a receipt R having a certain length. The drive unit 46 includes a feed motor driver 57, head drivers 58a and 58b, and a cutter motor driver 59, and drives each unit.

  The control unit 47 includes a CPU 61, a ROM 62, a RAM 63, and an input / output control device (hereinafter referred to as “IOC” (Input Output Controller)) 64, which are connected to each other via an internal bus 65. The ROM 62 includes a control program block 66 that stores a control program for the CPU 61 to perform various controls, and a control data block 67 that stores various control data such as character font data for printing text characters. . The character font data is not stored in the ROM 62 but may be provided separately with a CG-ROM.

  The RAM 63 stores various work area blocks 68 used as flags, a reception buffer 69 that temporarily stores print data received by the data receiving unit 41, and a print that stores data expanded into a printable state by the printing unit 43. It has a buffer 70 and the like, and is used as a work area for control processing. The reception buffer 69 stores the print data received in units of lines for each line data in accordance with the reception order, and has a capacity capable of storing a plurality of line data.

  In the print buffer 70, the first print buffer 70a in which front side print data for printing by the first print head 53 is developed and the back side print data for printing by the second print head 54 are developed. 2 print buffers 70b are included. In these print buffers 70a and 70b, the front side print data and the back side print data developed in the print image are developed based on the print data stored and held in the reception buffer 69. The RAM 63 is always backed up so as to retain the stored data even when the power is turned off. Note that these data may be stored in a nonvolatile memory (flash ROM, EEPROM, etc.) instead of the RAM 63.

  The IOC 64 supplements the function of the CPU 61 and incorporates a logic circuit for handling interface signals with various peripheral circuits, configured by a gate array, a custom LSI, or the like. As a result, the IOC 64 captures the print data received from the host device 2 as it is or processes it and fetches it into the internal bus 65, and in conjunction with the CPU 61, the data or control signal output from the CPU 61 to the internal bus 65 is received as is or Processed and output to the drive unit 46. The CPU 61 inputs / outputs various signals and data from each unit in the printing apparatus 3 via the IOC 64 according to the control program in the ROM 62 and the set value in the RAM 63 with the above configuration. That is, various types of data in the RAM 63 are processed based on the various types of input signals / data, and various types of signals / data are output to each unit in the printing apparatus 3 via the IOC 64, so that the print data received from the host apparatus 2 can be output. Perform print control.

(Print data generation method)
FIG. 3 is a schematic flowchart showing a procedure for generating the front side print data D1 and the back side print data D2 executed by the POS application 36 of the host apparatus 2. 4A and 4B are explanatory diagrams showing an example of a method for adjusting the printing position on the receipt R. FIG. 4A is an arrangement example of the front surface print data D1, and FIG. c) is an arrangement example of the back side print data D2 after the position adjustment.

  Referring to these drawings, when receiving payment information data from the POS server 6 side, the host device 2 generates print data based on setting information set in the printer driver 39. When double-sided printing is set, front side print data D1 and back side print data D2 are generated as print data D.

  First, in step ST1 of FIG. 3, each data of the payment information data is allocated (distributed) to a preset surface format, and based on this, surface print data D1 is generated in step ST2. Next, in step ST3, it is analyzed whether or not the code data B is included in the surface print data D1, and if included, the process proceeds to step ST4 along the flow of the arrow of YES, and Recognize the position.

  For example, as shown in FIG. 4 (a), on the receipt surface, from logo data consisting of graphics data G, notification data consisting of text data T, transaction data, transaction ID data consisting of code data B, and text data T Allocate point data.

  Next, in step ST5 of FIG. 3, it is analyzed whether or not the graphics data G is included in the data to be the back side print data D2 in each data of the payment information. When the graphics data G is included in the back side print data D2, the process proceeds from step ST5 to step ST6 in FIG. 3 to step ST6, and is printed on the back side according to a preset back side format. Allocate each data. Thereafter, in step ST7, it is determined whether or not the printing position of the graphics data G printed on the back side overlaps the printing position of the code data B printed on the front surface.

  Here, as shown in FIG. 4B, when the position of the graphics data G printed on the back side of the receipt overlaps the position of the code data B on the front surface, the flow proceeds from step ST7 in FIG. 3 to YES. In step ST8, the position of the graphics data G is adjusted so that it does not overlap the code data B. Next, in step ST9, based on the adjusted position, the reverse side print data D2 is edited and supplied to the printing apparatus 3 to generate the reverse side print data D2.

  For example, as shown in FIG. 4C, a margin S is inserted at the printing position of the graphics data G in the back surface printing data D2, and the printing position of the graphics data G is received with respect to the printing position of the code data B. The position of the graphics data G is adjusted so that the position is shifted in the length direction of the paper, and the back side print data D2 including the margin S is generated.

  As a result, it is possible to avoid the adverse effect that the graphics data G having a high printing density is printed on the back surface of the printing position of the code data B and the reading accuracy of the code data B is lowered. In the example of FIG. 4, the margin S is inserted to shift the position of the graphics data G. However, when the text data T is included in the data printed on the back side, the text is substituted for the margin S. It is also possible to arrange the data T. In general, even if the text data T is printed on the back side of the code data B, the reading accuracy of the code data B does not decrease. When using a thin receipt paper or the like, if the text data T is printed on the back side of the code data B and the read accuracy of the code data B may be lowered, a blank S is inserted. Of course, it is necessary to do this.

  On the other hand, if the position of the graphics data G printed on the back side of the receipt does not overlap the position of the code data B on the front surface, the process proceeds from step ST7 to step ST9 in FIG. Thus, the back surface print data D2 is generated without adjusting the position of the graphics data G.

  When the code data B is not included in the front surface print data D1, the control shifts from step ST3 to step ST10 in FIG. 3 according to the flow of NO, and the data printed on the back surface is in accordance with the back surface format. Based on the allocation, back surface print data D2 is generated in step ST9. Similarly, when the graphics data G is not included in the back side print data, the control shifts from step ST5 to step ST10 in FIG. 3 in step ST10, and the data printed on the back side is converted to the back side format. Based on this, back side print data D2 is generated in step ST9.

(Another example of position adjustment method)
Next, each example of the position adjustment method for preventing the printing position of the graphics data G from overlapping the printing position of the code data B will be described below.

  In the example shown in FIG. 5, when a plurality of graphics data G <b> 1 to G <b> 4 is included in the back side print data of the receipt R, for example, as shown in FIG. Adjustments are made so that S3 is inserted between them, and back side print data D2 is generated. As shown in FIG. 5B, when the printing position of the code data B in the front surface printing data overlaps with the printing position of the graphics data G4 on the back surface side, the printing position of the code data B in the front surface printing data is set. The margin S11 is inserted and adjusted so that the printing position of the code data B is opposite to the margin S4 adjacent to the graphics data G4 to generate the surface printing data D1.

  Next, as shown in FIG. 6A, in receipt printing, generally, in the surface format of the receipt, the print area A1 of the graphics data G such as a store logo printed at the top of the receipt, and the rear end of the receipt. The print area A4 of the code data B such as the transaction ID to be printed is a fixed-length area, and the area between these is the print areas A2 and A3 whose length is variable according to the amount of transaction data. This variable-length area includes a variable-length area A2 in which notification information from a store made up of text data T is printed and a variable-length area A3 in which transaction data made up of text data T is printed.

  In this case, as shown in FIG. 6 (b), the back surface print data area is also divided into print sections a1 to a4 so as to correspond to the front surface print areas A1 to A4, and the code data B is printed on the front surface print area. If the corresponding print section a4 is set as a print prohibition section of the graphics data G, the printing position is adjusted so that the graphics data G is printed in any one of a1 to a3, and the back surface print data D2 is generated. Good. In addition, when the code data B is included in the data printed on the back side, the code data B is not printed in the print section a1 corresponding to the print area A1 where the graphics data G is printed on the front side. The back side print data D2 may be generated by adjusting.

  Therefore, in the example shown in FIG. 6, the print section a1 on the back surface is an area where the text data T and the graphics data G can be printed, and the print sections a2, a3 are areas where any data T, G, B can be printed. The print section a4 is an area where only the text data T can be printed. When the graphics data G is printed on the front and back sides, for example, when there is a possibility that the visibility of the graphics data G on the front side is lowered, the print section a1 on the back side is set to only the text data T. Should be set in the printable area.

  In the example of FIG. 6, the graphics data G is prevented from being printed on the back side of the code data B by adjusting the distribution of data to be printed in the print sections a1 to a4 on the back side. Instead, as shown in FIG. 7, in the print sections a11 to a15 on the back side, the print section a14 corresponding to the area A14 where the code data B is printed on the front side is set as a restricted area. It is also possible to limit the data to be printed to NULL data or text data T1 having a predetermined content. Similarly, a print section a11 corresponding to the area A11 where the graphics data G is printed on the front side is set as a restricted area, and it is possible to restrict the code data B from being printed here.

(Double-sided printing example)
Next, FIG. 8 shows a specific example of front side printing and back side printing of a receipt. As shown in this figure, the surface print data for receipt issuance includes data to be printed in the surface print areas A21 to A25 of the receipt R1. The front surface printing area A21 includes a store logo that is graphics data G, a “receipt”, and store information that is text data T. The front side printing area A22 includes business guide information that is text data T. The front surface printing area A23 includes transaction data that is text data T. The front surface printing area A24 includes registration data as text data T, and the front surface printing area A25 includes transaction ID data in the form of one-dimensional barcode data B1. In addition to these, advertisement data, coupon data, point data, and the like may be printed on the surface of the receipt R1.

  The back surface print areas a21 to a25 of the receipt R1 are areas corresponding to the front surface print areas A21 to A25, respectively. A member recruitment guidance message that is text data T is printed in the back surface print area a21 corresponding to the front surface print area A21, and the two-dimensional code B2 is stored in the back surface print area a22 corresponding to the front surface print area A22 in which the text data T is printed. Mobile site data and text data T are printed in the form. Advertisement data, coupon data, point data, and the like may be printed on the back side of the receipt R1 together with the one-dimensional barcode and the two-dimensional code.

  In the receipt R1, the graphics data G is not printed on the back surface of the barcode B1 representing the transaction ID printed on the front surface, and the graphics are also printed on the front surface of the two-dimensional code B2 representing the mobile site printed on the back surface. Data G is not printed. Therefore, the reading accuracy of these code data is not reduced by bleeding or show-through of graphics data having a high printing density printed on the opposite surface.

(Other embodiments)
In the above example, the present invention is applied to the POS system. However, the host device for generating print data for duplex printing in which graphics data and code data are added to text data, and printing for duplex printing are provided. The present invention can be applied to any printing system including a printing apparatus including a head regardless of the type of terminal.

1 POS system, 2 host device, 3 printing device, 4 POS terminal, 5 network, 6 POS server, 11 CPU, 12 ROM, 13 RAM, 15 product code block, 16 product name block, 17 price block, 18 inventory block, 19 advertising data block, 20 coupon data block, 21 point data block, R, R1 receipt, D print data, D1 front side print data, D2 back side print data, 31 keyboard, 32 bar code reader, 33 card reader, 34 display, 35 OS 36 POS application, 37 CO, 38 SO, 39 Printer driver, 41 Data receiving unit, 42 Transport unit, 43 Printing unit, 44 Cutting unit, 46 Drive unit, 47 Control unit, 51 Receipt feed mode 52, receipt paper, 53 first print head, 54 second print head, 55 receipt cutter, 56 cutter motor, 57 feed motor driver, 58a, 58b head driver, 59 cutter motor driver, 61 CPU, 62 ROM, 63 RAM 64 IOC, 65 Internal bus, 66 Control program block, 67 Control data block, 68 Work area block, 69 Receive buffer, 70 Print buffer, 70a First print buffer, 70b Second print buffer, G, G1, G2, G3 , G4 graphics data, T text data, B code data, S, S1 to S4, S11 margins, A1 to A4, A11 to A14 printing area, A21 to A25 surface printing area, a1 to a4 11~a15 printing section, A 21 to A 25 side print area

Claims (10)

A print data processing method for printing on both sides of a recording medium,
A first analysis step of analyzing whether or not the first print data is included in the first surface print data printed on the first surface on one side of the recording medium;
A second analysis step of analyzing whether the second print data is included in the second surface print data printed on the second surface on the other side of the recording medium;
When the second print data is included, the first print data and the second print data are not printed at the overlapping positions on the first surface and the second surface of the recording medium. A data adjustment step of adjusting at least one of the first-side print data and the second-side print data,
The first print data and the second print data are each one of reading target data printed on the premise of optical reading and graphics data other than the reading target data. Print data processing method. In claim 1,
The print data processing method, wherein the read target data is one-dimensional barcode data or two-dimensional code data. In claim 1 or 2,
In the data adjustment step, the printing position of the second side corresponding to the first side printing position where the first printing data is printed is a margin, or printing of text data included in the second side printing data A method of processing print data, wherein the second side print data is adjusted so as to be in a position. In claim 1 or 2,
In the data adjustment step,
When the second side print data includes a plurality of the second print data, the second side print data is adjusted so that a margin between them is inserted,
The print data processing method, wherein the first side print data is adjusted so that the first print data is printed at a position of the first side corresponding to the margin. In claim 1 or 2,
Dividing the print area of the second surface print data on the second surface of the recording medium into a plurality of predetermined sections;
In the data adjustment step, the second surface print data is adjusted so that the second print data is not printed in the section of the second surface corresponding to the first surface printing position where the first print data is printed. A method for processing print data. In claim 1 or 2,
A part of the print area of the first surface print data on the first surface of the recording medium is determined in advance as a first surface print position of the first print data,
In the data adjustment step, the second surface print data is adjusted so that the second print data is not printed at the print position of the second surface corresponding to the first surface print position. Processing method. In any one of claims 1 to 6,
The first side print data is:
Receipt issuance first side print data including text data representing transaction content and one-dimensional barcode data or two-dimensional code data representing ID for identifying the transaction, or one-dimensional bar representing store data Receipt issuance first side print data including code data or two-dimensional code data and text data representing the contents of the transaction,
The print data processing method, wherein the second side print data is receipt second side print data including the graphics data for coupons or advertisements. In any one of claims 1 to 6,
The first side print data is the first side print data for issuing a receipt including the graphics data representing a store logo and text data representing the contents of a transaction,
The second side print data is print second data for receipt issuing including the graphics data for coupons or advertisements and one-dimensional barcode data or two-dimensional code data. Processing method. A print data processing apparatus for processing print data by the print data processing method according to any one of claims 1 to 8,
A first analysis unit that analyzes whether or not the first print data is included in the first surface print data printed on the first surface on one side of the recording medium;
A second analysis unit for analyzing whether or not the second print data is included in the second surface print data printed on the second surface on the other side of the recording medium;
When the second print data is included, the first print data and the second print data are not printed at the overlapping positions on the first surface and the second surface of the recording medium. A print data processing apparatus comprising: a data adjustment unit that adjusts at least one of the first-side print data and the second-side print data. A print data processing apparatus according to claim 9;
A printing data processing system comprising: a printing device that prints the first-side printing data and the second-side printing data after being adjusted by the data adjustment unit on the recording medium.

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